Communist society

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Marxism

In Marxist thought, a communist society or the communist system is the type of society and economic system postulated to emerge from technological advances in the productive forces, representing the ultimate goal of the political ideology of communism. A communist society is characterized by common ownership of the means of production with free access to the articles of consumption and is classless and stateless, implying the end of the exploitation of labour.

Communism is a specific stage of socioeconomic development predicated upon a superabundance of material wealth, which is postulated to arise from advances in production technology and corresponding changes in the social relations of production. This would allow for distribution based on need and social relations based on freely-associated individuals.

The term communist society should be distinguished from the Western concept of the communist state, the latter referring to a state ruled by a party which professes a variation of Marxism–Leninism.

Economic aspects

A communist economic system would be characterized by advanced productive technology that enables material abundance, which in turn would enable the free distribution of most or all economic output and the holding of the means of producing this output in common. In this respect communism is differentiated from socialism, which, out of economic necessity, restricts access to articles of consumption and services based on one's contribution.

In further contrast to previous economic systems, communism would be characterized by the holding of natural resources and the means of production in common as opposed to them being privately owned (as in the case of capitalism) or owned by public or cooperative organizations that similarly restrict their access (as in the case of socialism). In this sense, communism involves the "negation of property" insofar as there would be little economic rationale for exclusive control over production assets in an environment of material abundance.

The fully developed communist economic system is postulated to develop from a preceding socialist system. Marx held the view that socialism—a system based on social ownership of the means of production—would enable progress toward the development of fully developed communism by further advancing productive technology. Under socialism, with its increasing levels of automation, an increasing proportion of goods would be distributed freely.

Social aspects

Individuality, freedom and creativity

A communist society would free individuals from long working hours by first automating production to an extent that the average length of the working day is reduced and second by eliminating the exploitation inherent in the division between workers and owners. A communist system would thus free individuals from alienation in the sense of having one's life structured around survival (making a wage or salary in a capitalist system), which Marx referred to as a transition from the "realm of necessity" to the "realm of freedom". As a result, a communist society is envisioned as being composed of an intellectually-inclined population with both the time and resources to pursue its creative hobbies and genuine interests, and to contribute to creative social wealth in this manner. Karl Marx considered "true richness" to be the amount of time one has at his disposal to pursue one's creative passions. Marx's notion of communism is in this way radically individualistic.

In fact, the realm of freedom actually begins only where labor which is determined by necessity and mundane considerations ceases; thus in the very nature of things it lies beyond the sphere of actual material production.

—Capital, Volume III, 1894

Marx's concept of the "realm of freedom" goes hand-in-hand with his idea of the ending of the division of labor, which would not be required in a society with highly automated production and limited work roles. In a communist society, economic necessity and relations would cease to determine cultural and social relations. As scarcity is eliminated, alienated labor would cease and people would be free to pursue their individual goals. Additionally, it is believed that the principle of "from each according to his ability, to each according to his needs" could be fulfilled due to scarcity being non-existent.

Politics, law and governance

Marx and Engels maintained that a communist society would have no need for the state as it exists in contemporary capitalist society. The capitalist state mainly exists to enforce hierarchical economic relations, to enforce the exclusive control of property, and to regulate capitalistic economic activities—all of which would be non-applicable to a communist system. Engels noted that in a socialist system the primary function of public institutions will shift from being about the creation of laws and the control of people into a technical role as an administrator of technical production processes, with a decrease in the scope of traditional politics as scientific administration overtakes the role of political decision-making. Communist society is characterized by democratic processes, not merely in the sense of electoral democracy, but in the broader sense of open and collaborative social and workplace environments.

Marx never clearly specified whether or not he thought a communist society would be just; other thinkers have speculated that he thought communism would transcend justice and create society without conflicts, thus, without the needs for rules of justice.

Transitional stages

Marx also wrote that between capitalist and communist society, there would be a transitory period known as the dictatorship of the proletariat. During this preceding phase of societal development, capitalist economic relationships would gradually be abolished and replaced with socialism. Natural resources would become public property, while all manufacturing centers and workplaces would become socially owned and democratically managed. Production would be organized by scientific assessment and planning, thus eliminating what Marx called the "anarchy in production". The development of the productive forces would lead to the marginalization of human labor to the highest possible extent, to be gradually replaced by automated labor.

Open-source and peer production

Many aspects of a communist economy have emerged in recent decades in the form of open-source software and hardware, where source code and thus the means of producing software is held in common and freely accessible to everyone; and to the processes of peer production where collaborative work processes produce freely available software that does not rely on monetary valuation.

Ray Kurzweil posits that the goals of communism will be realized by advanced technological developments in the 21st century, where the intersection of low manufacturing costs, material abundance and open-source design philosophies will enable the realization of the maxim "from each according to his ability, to each according to his needs".

In Soviet ideology

The communist economic system was officially enumerated as the ultimate goal of the Communist Party of the Soviet Union in its party platform. According to the 1986 Programme of the CPSU:

Communism is a classless social system with one form of public ownership of the means of production and with full social equality of all members of society. Under communism, the all-round development of people will be accompanied by the growth of the productive forces on the basis of continuous progress in science and technology, all the springs of social wealth will flow abundantly, and the great principle "From each according to his ability, to each according to his needs" will be implemented. Communism is a highly organised society of free, socially conscious working people a society in which public self-government will be established, a society in which labour for the good of society will become the prime vital requirement of everyone, a clearly recognised necessity, and the ability of each person will be employed to the greatest benefit of the people.

The material and technical foundation of communism presupposes the creation of those productive forces that open up opportunities for the full satisfaction of the reasonable requirements of society and the individual. All productive activities under communism will be based on the use of highly efficient technical facilities and technologies, and the harmonious interaction of man and nature will be ensured.

In the highest phase of communism the directly social character of labor and production will become firmly established. Through the complete elimination of the remnants of the old division of labor and the essential social differences associated with it, the process of forming a socially homogeneous society will be completed.

Communism signifies the transformation of the system of socialist self-government by the people, of socialist democracy into the highest form of organization of society: communist public self-government. With the maturation of the necessary socioeconomic and ideological preconditions and the involvement of all citizens in administration, the socialist state—given appropriate international conditions—will, as Lenin noted, increasingly become a transitional form "from a state to a non-state". The activities of state bodies will become non-political in nature, and the need for the state as a special political institution will gradually disappear.

The inalienable feature of the communist mode of life is a high level of consciousness, social activity, discipline, and self-discipline of members of society, in which observance of the uniform, generally accepted rules of communist conduct will become an inner need and habit of every person.

Communism is a social system under which the free development of each is a condition for the free development of all.

In Vladimir Lenin's political theory, a classless society would be a society controlled by the direct producers, organized to produce according to socially managed goals. Such a society, Lenin suggested, would develop habits that would gradually make political representation unnecessary, as the radically democratic nature of the Soviets would lead citizens to come to agree with the representatives' style of management. Only in this environment, Lenin suggested, could the state wither away, ushering in a period of stateless communism.

In Soviet ideology, Marx's concepts of the "lower and higher phases of communism" articulated in the Critique of the Gotha Program were reformulated as the stages of "socialism" and "communism". The Soviet state claimed to have begun the phase of "socialist construction" during the implementation of the first Five-Year Plans during the 1930s, which introduced a centrally planned, nationalized/collectivized economy. The 1962 Program of the Communist Party of the Soviet Union, published under the leadership of Nikita Khrushchev, claimed that socialism had been firmly established in the USSR, and that the state would now progress to the "full-scale construction of communism", although this may be understood to refer to the "technical foundations" of communism more so than the withering away of the state and the division of labor per se. However, even in the final edition of its program before the party's dissolution, the CPSU did not claim to have fully established communism, instead claiming that the society was undergoing a very slow and gradual process of transition.

Fictional portrayals

Main article: The Culture

The Culture novels by Iain M Banks are centered on a communist post-scarcity economy where technology is advanced to such a degree that all production is automated, and there is no use for money or property (aside from personal possessions with sentimental value). Humans in the Culture are free to pursue their own interests in an open and socially-permissive society. The society has been described by some commentators as "communist-bloc" or "anarcho-communist". Banks' close friend and fellow science fiction writer Ken MacLeod has said that The Culture can be seen as a realization of Marx's communism, but adds that "however friendly he was to the radical left, Iain had little interest in relating the long-range possibility of utopia to radical politics in the here and now. As he saw it, what mattered was to keep the utopian possibility open by continuing technological progress, especially space development, and in the meantime to support whatever policies and politics in the real world were rational and humane."

The economy and society of the United Federation of Planets in the Star Trek franchise has been described as a communist society where material scarcity has been eliminated due to the wide availability of replicator technology that enables free distribution of output, where there is no need for money.

Socialism of the 21st century

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Fernando Lugo (President of Paraguay), Evo Morales (President of Bolivia), Lula da Silva (President of Brazil), Rafael Correa (President of Ecuador) and Hugo Chávez (President of Venezuela) on 29 January 2009

Socialism of the 21st century (Spanish: socialismo del siglo XXI) (German: Der Sozialismus des 21. Jahrhunderts) is an interpretation of socialist principles first advocated by German sociologist and political analyst Heinz Dieterich and taken up by a number of Latin American leaders. Dieterich argued in 1996 that both free-market industrial capitalism and 20th-century socialism have failed to solve urgent problems of humanity such as poverty, hunger, exploitation of labour, economic oppression, sexism, racism, the destruction of natural resources and the absence of true democracy. Socialism of the 21st century has democratic socialist elements, but it also resembles revisionism.

Leaders who have advocated for this form of socialism include Hugo Chávez of Venezuela, Néstor Kirchner of Argentina, Rafael Correa of Ecuador, Evo Morales of Bolivia and Luiz Inácio Lula da Silva of Brazil. Because of the local unique historical conditions, socialism of the 21st century is often contrasted with previous applications of socialism in other countries, with a major difference being the effort towards a more effective economic planning process.

Historical foundations

After a series of structural adjustment loans and debt restructuring led by the International Monetary Fund in the late 20th century, Latin America experienced a significant increase in inequality. Between 1990 and 1999, the Gini coefficient rose in almost every Latin American country. Volatile prices and inflation led to dissatisfaction. In 2000, only 37% of Latin Americans were satisfied with their democracies (20 points less than Europeans and 10 points less than sub-Saharan Africans). In this context, a wave of left-leaning socio-political movements on behalf of indigenous rights, cocaleros, labor rights, women's rights, land rights and educational reform emerged to eventually provide momentum for the election of socialist leaders.

Socialism of the 21st century draws on indigenous traditions of communal governance and previous Latin America socialist and communist movements, including those of Salvador Allende, Fidel Castro, Che Guevara and the Sandinista National Liberation Front.

Theoretical tenets

According to Dieterich, this form of socialism is revolutionary in that the existing society is altered to be qualitatively different, but the process itself should be gradual and non-violent, instead utilising democracy to secure power, education, scientific knowledge about society and international cooperation. Dieterich suggests the construction of four basic institutions within the new reality of post-capitalist civilisation:

1. Equivalence economy based on Marxian labor theory of value and democratically determined by those who directly create value instead of market-economical principles.
2. Majority democracy which makes use of referendums to decide upon important societal questions.
3. Basic state democracy with a suitable protection of minority rights.
4. Citizens who are responsible, rational and self-determined.

Latin American application

See also: Pink tide

Regional integration

The model of socialism of the 21st century encourages economic and political integration among nations in Latin America and the Caribbean. This is often accompanied with opposition to North American influence. Regional organizations like ALBA, CELAC, Mercosur and UNASUR promote cooperation with Latin America and exclude North American countries. ALBA is most explicitly related to socialism of the 21st century while other organizations focus on economic integration, ALBA promotes social, political and economic integration among countries that subscribe to democratic socialism. Its creation was announced in direct opposition to George W. Bush's attempts to establish a Free Trade Area of the Americas that included the United States. In 2008, ALBA introduced a monetary union using the SUCRE as its regional currency.

Bolivarian process

Former Venezuelan President Hugo Chávez called the process of social reforms in Venezuela the Bolivarian process. This approach is more heavily influenced by the theories of Istvàn Mészáros, Michael Lebowitz and Marta Harnecker (who was Chávez's adviser between 2004 and 2011) than by those of Heinz Dieterich. The process draws its name from Latin American liberator Simón Bolívar and is a contemporary example of Bolivarianism.

Buen vivir

Further information: Sumak kawsay

Often translated to good living or living well, the concept of buen vivir is related to the movement for indigenous rights and rights of nature. It focuses on the living sustainably as the member of a community that includes both human beings and Nature. Buen vivir is enshrined in Ecuador's 2008 constitution as an alternative to neoliberal development. The constitution outlines a set of rights, one of which is the rights of nature. In line with the assertion of these rights, buen vivir seeks to change the relationship between nature and humans to a more bio-pluralistic view, eliminating the separation between nature and society. This approach has been applied to the Yasuní-ITT Initiative. Buen vivir is sometimes conceptualised as collaborative consumption in a sharing economy and the term is used to look at the world in way sharply differentiated from natural,or social or human capital.

Criticism

Authoritarianism

Critics claim that socialism of the 21st century in Latin America acts as a façade for authoritarianism. The charisma of figures like Hugo Chávez and mottoes like "Country, Socialism, or Death!" have drawn comparisons to the Latin American dictators and caudillos of the past. According to Steven Levitsky of Harvard University: "Only under the dictatorships of the past [...] were presidents reelected for life", with Levitsky further stating that while Latin America experienced democracy, citizens opposed "indefinite reelection, because of the dictatorships of the past". Levitsky then noted: "In Nicaragua, Venezuela and Ecuador, reelection is associated with the same problems of 100 years ago". The Washington Post also stated in 2014 that "Bolivia's Evo Morales, Daniel Ortega of Nicaragua and the late Venezuelan president Hugo Chávez [...] used the ballot box to weaken or eliminate term limits".

In 2015, The Economist stated that the Bolivarian Revolution in Venezuela—now under Nicolás Maduro after Chávez's death in 2013—was devolving from authoritarianism to dictatorship as opposition politicians were jailed for plotting to undermine the government, violence was widespread and opposition media shut down. Western media coverage of Chávez and other Latin American leaders from the 21st-century socialist movement has been criticised as unfair by their supporters and leftist media critics.

Economics

The sustainability and stability of economic reforms associated with governments adhering to socialism of the 21st century have been questioned. Latin American countries have primarily financed their social programs with extractive exports like petroleum, natural gas and minerals, creating a dependency that some economists claim has caused inflation and slowed growth. For the Bolivarian government of Venezuela, their economic policies led to shortages in Venezuela, a high inflation rate and a dysfunctional economy. However, the Chávez and Maduro governments have attributed Venezuela's economic problems to the decline in oil prices, sanctions imposed by the United States and economic sabotage by the opposition.

In 2015, Venezuela's economy was performing poorly—the currency had collapsed, it had the world's highest inflation rate and its GDP shrank into an economic recession. A 2017 NACLA analysis stated that "reductions in poverty and inequality during the Chávez years were real, but somewhat superficial. [...] [S]tructural poverty and inequality, such as the quality of housing, neighborhoods, education, and employment, remained largely unchanged".

Populism

Although democratic socialist intellectuals have welcomed a socialism of the 21st century, they have been skeptical of Latin America's examples. While citing their progressive role, they argue that the appropriate label for these governments is populist rather than socialist. Similarly, some of the left-wing pink tide governments were criticised for turning from socialism to authoritarianism and populism

 

Aquatic ape hypothesis

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The aquatic ape hypothesis (AAH), also referred to as aquatic ape theory (AAT) or the waterside hypothesis of human evolution, postulates that the ancestors of modern humans took a divergent evolutionary pathway from the other great apes by becoming adapted to a more aquatic habitat.

The hypothesis was initially proposed by the marine biologist Alister Hardy in 1960, who argued that a branch of apes was forced by competition over terrestrial habitats to hunt for food such as shellfish on the sea shore and sea bed, leading to adaptations that explained distinctive characteristics of modern humans such as functional hairlessness and bipedalism. Elaine Morgan's 1990 book on the hypothesis, Scars of Evolution, received some favorable reviews but was subject to criticism from the anthropologist John Langdon in 1997, who characterized it as an "umbrella hypothesis" with inconsistencies that were unresolved and a claim to parsimony that was false.

The hypothesis is highly controversial, and has been criticized by many as a pseudoscience. The hypothesis is thought to be more popular with the lay public than with scientists; in the scientific literature, it is generally ignored by anthropologists.

History

Hominin timeline
−10 — – −9.5 — – −9 — – −8.5 — – −8 — – −7.5 — – −7 — – −6.5 — – −6 — – −5.5 — – −5 — – −4.5 — – −4 — – −3.5 — – −3 — – −2.5 — – −2 — – −1.5 — – −1 — – −0.5 — – 0 —	Miocene Pliocene Pleistocene Hominini Nakalipithecus Ouranopithecus Oreopithecus Sahelanthropus Orrorin Ardipithecus Australopithecus Homo habilis Homo erectus Homo bodoensis Homo sapiens Neanderthals,Denisovans	← Earlier apes ← Gorilla split ← Chimpanzee split ← Earliest bipedal ← Stone tools ← Dispersal beyond Africa ← Earliest fire / cooking ← Earliest clothes ← Modern humans H o m i n i d s
(million years ago)

had become a respected academic and knighted for contributions to marine biology, Hardy finally voiced his thoughts in a speech to the British Sub-Aqua Club in Brighton on 5 March 1960. Several national newspapers reported sensational presentations of Hardy's ideas, which he countered by explaining them more fully in an article in New Scientist on 17 March 1960: "My thesis is that a branch of this primitive ape-stock was forced by competition from life in the trees to feed on the sea-shores and to hunt for food, shellfish, sea-urchins etc., in the shallow waters off the coast."^[11]

The idea was generally ignored by the scientific community after the article was published. Some interest was received, notably from the geographer Carl Sauer whose views on the role of the seashore in human evolution^[12] "stimulated tremendous progress in the study of coastal and aquatic adaptations" inside marine archaeology.^[13] In 1967, the hypothesis was mentioned in The Naked Ape, a popular book by the zoologist Desmond Morris, who reduced Hardy's phrase "more aquatic ape-like ancestors" to the bare "aquatic ape", commenting that "despite its most appealing indirect evidence, the aquatic theory lacks solid support".

While traditional descriptions of 'savage' existence identified three common sources of sustenance: gathering of fruit and nuts, fishing, and hunting, in the 1950s, the anthropologist Raymond Dart focused on hunting and gathering as the likely organizing concept of human society in prehistory, and hunting was the focus of the screenwriter Robert Ardrey's 1961 best-seller African Genesis. Another screenwriter, Elaine Morgan, responded to this focus in her 1972 Descent of Woman, which parodied the conventional picture of "the Tarzanlike figure of the prehominid who came down from the trees, saw a grassland teeming with game, picked up a weapon and became a Mighty Hunter," and pictured a more peaceful scene of humans by the seashore. She took her lead from a section in Morris's 1967 book which referred to the possibility of an Aquatic Ape period in evolution, his name for the speculation by the biologist Alister Hardy in 1960. When it aroused no reaction in the academic community, she dropped the feminist criticism and wrote a series of books–The Aquatic Ape (1982), The Scars of Evolution (1990), The Descent of the Child (1994), The Aquatic Ape Hypothesis (1997) and The Naked Darwinist (2008)–which explored the issues in more detail. Books published on the topic since then have avoided the contentious term aquatic and used waterside instead.

The Hardy/Morgan hypothesis

Hardy's hypothesis as outlined in the New Scientist was:

My thesis is that a branch of this primitive ape-stock was forced by competition from life in the trees to feed on the sea-shores and to hunt for food, shell fish, sea-urchins etc., in the shallow waters off the coast. I suppose that they were forced into the water just as we have seen happen in so many other groups of terrestrial animals. I am imagining this happening in the warmer parts of the world, in the tropical seas where Man could stand being in the water for relatively long periods, that is, several hours at a stretch.

Hardy argued a number of features of modern humans are characteristic of aquatic adaptations. He pointed to humans' lack of body hair as being analogous to the same lack seen in whales and hippopotamuses. and noted the layer of subcutaneous fat humans have that Hardy believed other apes lacked, although it has been shown that captive apes with ample access to food have levels of subcutaneous fat similar to humans. Additional features cited by Hardy include the location of the trachea in the throat rather than the nasal cavity, the human propensity for front-facing copulation, tears and eccrine sweating, though these claimed pieces of evidence have alternative evolutionary adaptationist explanations that do not invoke an aquatic context. Hardy additionally posited that bipedalism evolved first as an aid to wading before becoming the usual means of human locomotion, and tool use evolved out of the use of rocks to crack open shellfish. These last arguments were cited by later proponents of AAH as an inspiration for their research programs.

Morgan summed up her take on the hypothesis in 2011:

Waterside hypotheses of human evolution assert that selection from wading, swimming and diving and procurement of food from aquatic habitats have significantly affected the evolution of the lineage leading to Homo sapiens as distinct from that leading to Pan.

Reactions

Aquatic Ape Conference delegates in Valkenburg, 1987

The AAH is generally ignored by anthropologists, although it has a following outside academia and has received celebrity endorsement, for example from David Attenborough.

Academics who have commented on the aquatic ape hypothesis include categorical opponents (generally members of the community of academic anthropology) who reject almost all of the claims related to the hypothesis. Other academics have argued that the rejection of Hardy and Morgan is partially unfair given that other explanations which suffer from similar problems are not so strongly opposed. A conference devoted to the subject was held at Valkenburg, Netherlands, in 1987. Its 22 participants included academic proponents and opponents of the hypothesis and several neutral observers headed by the anthropologist Vernon Reynolds of the University of Oxford. His summary at the end was:

Overall, it will be clear that I do not think it would be correct to designate our early hominid ancestors as 'aquatic'. But at the same time there does seem to be evidence that not only did they take to water from time to time but that the water (and by this I mean inland lakes and rivers) was a habitat that provided enough extra food to count as an agency for selection.

Critiques

The AAH is not accepted as empirically supported by the scholarly community, and has been met with significant skepticism. The Nature editor and paleontologist Henry Gee has argued that the hypothesis has equivalent merit to creationism, and should be similarly dismissed.

In a 1997 critique, anthropologist John Langdon considered the AAH under the heading of an "umbrella hypothesis" and argued that the difficulty of ever disproving such a thing meant that although the idea has the appearance of being a parsimonious explanation, it actually was no more powerful an explanation than the null hypothesis that human evolution is not particularly guided by interaction with bodies of water. Langdon argued that however popular the idea was with the public, the "umbrella" nature of the idea means that it cannot serve as a proper scientific hypothesis. Langdon also objected to Morgan's blanket opposition to the "savannah hypothesis" which he took to be the "collective discipline of paleoanthropology". He observed that some anthropologists had regarded the idea as not worth the trouble of a rebuttal. In addition, the evidence cited by AAH proponents mostly concerned developments in soft tissue anatomy and physiology, whilst paleoanthropologists rarely speculated on evolutionary development of anatomy beyond the musculoskeletal system and brain size as revealed in fossils. After a brief description of the issues under 26 different headings, he produced a summary critique of these with mainly negative judgments. His main conclusion was that the AAH was unlikely ever to be disproved on the basis of comparative anatomy, and that the one body of data that could potentially disprove it was the fossil record.

Anthropologist John D. Hawks wrote that it is fair to categorize the AAH as pseudoscience because of the social factors that inform it, particularly the personality-led nature of the hypothesis and the unscientific approach of its adherents. Physical anthropologist Eugenie Scott has described the aquatic ape hypothesis as an instance of "crank anthropology" akin to other pseudoscientific ideas in anthropology such as alien-human interbreeding and Bigfoot.

In The Accidental Species: Misunderstandings of Human Evolution (2013), Henry Gee remarked on how a seafood diet can aid in the development of the human brain. He nevertheless criticized the AAH because "it's always a problem identifying features [such as body fat and hairlessness] that humans have now and inferring that they must have had some adaptive value in the past." Also "it's notoriously hard to infer habits [such as swimming] from anatomical structures".

Popular support for the AAH has become an embarrassment to some anthropologists, who want to explore the effects of water on human evolution without engaging with the AAH, which they consider "emphasizes adaptations to deep water (or at least underwater) conditions". Foley and Lahr suggest that "to flirt with anything watery in paleoanthropology can be misinterpreted", but argue "there is little doubt that throughout our evolution we have made extensive use of terrestrial habitats adjacent to fresh water, since we are, like many other terrestrial mammals, a heavily water-dependent species." But they allege that "under pressure from the mainstream, AAH supporters tended to flee from the core arguments of Hardy and Morgan towards a more generalized emphasis on fishy things."

In "The Waterside Ape", a pair of 2016 BBC Radio documentaries, David Attenborough discussed what he thought was a "move towards mainstream acceptance" for the AAH in the light of new research findings. He interviewed scientists supportive of the idea, including Kathlyn Stewart and Michael Crawford who had published papers in a special issue of the Journal of Human Evolution on "The Role of Freshwater and Marine Resources in the Evolution of the Human Diet, Brain and Behavior". Responding to the documentaries in a newspaper article, paleoanthropologist Alice Roberts criticized Attenborough's promotion of AAH and dismissed the idea as a distraction "from the emerging story of human evolution that is more interesting and complex". She argued that AAH had become "a theory of everything" that is simultaneously "too extravagant and too simple".

Philosopher Daniel Dennett, in his discussion of evolutionary philosophy, commented "During the last few years, when I have found myself in the company of distinguished biologists, evolutionary theorists, paleoanthropologists and other experts, I have often asked them to tell me, please, exactly why Elaine Morgan must be wrong about the aquatic theory. I haven’t yet had a reply worth mentioning, aside from those who admit, with a twinkle in their eyes, that they have also wondered the same thing." He challenged both Elaine Morgan and the scientific establishment in that "Both sides are indulging in adapt[at]ionist Just So stories". Along the same lines, historian Erika Lorraine Milam noted that independent of Morgan's work, certain standard explanations of human development in paleoanthropology have been roundly criticized for lacking evidence, while being based on sexist assumptions. Anatomy lecturer Bruce Charlton gave Morgan's book Scars of Evolution an enthusiastic review in the British Medical Journal in 1991, calling it "exceptionally well written" and "a good piece of science".

In 1995, paleoanthropologist Phillip Tobias declared that the savannah hypothesis was dead, because the open conditions did not exist when humanity's precursors stood upright and that therefore the conclusions of the Valkenberg conference were no longer valid. Tobias praised Morgan's book Scars of Evolution as a "remarkable book", though he said that he did not agree with all of it. Tobias and his student further criticised the orthodox hypothesis by arguing that the coming out of the forest of man's precursors had been an unexamined assumption of evolution since the days of Lamarck, and followed by Darwin, Wallace and Haeckel, well before Raymond Dart used it.

Reactions of Hardy and Morgan

Alister Hardy was astonished and mortified in 1960 when the national Sunday papers carried banner headlines "Oxford professor says man a sea ape", causing problems with his Oxford colleagues. As he later said to his ex-pupil Desmond Morris, "Of course I then had to write an article to refute this saying no this is just a guess, a rough hypothesis, this isn't a proven fact. And of course we're not related to dolphins."

Elaine Morgan's 1972 book Descent of Woman became an international best-seller, a Book of the Month selection in the United States and was translated into ten languages. The book was praised for its feminism but paleoanthropologists were disappointed with its promotions of the AAH. Morgan removed the feminist critique and left her AAH ideas intact, publishing the book as The Aquatic Ape 10 years later, but it did not garner any more positive reaction from scientists.

Related academic and independent research

Although the general reaction to Hardy and Morgan's proposals was silence by the relevant academic community, there have been over the last decades some academics who were inspired by AAH proposals, even to the point of pursuing particular lines of research on its basis. Some of the academics and professional scientists who have supported the AAH include Michael Crawford, Professor and Director of the Institute of Brain Chemistry and Human Nutrition at Imperial College London, his former postdoctoral researcher, Stephen Cunnane, now professor of medicine at Université de Sherbrooke, Erika Schagatay, professor of Environmental Physiology at Mid Sweden University, Kathlyn M. Stewart, Section Head of Palaeobiology at the Canadian Museum of Nature, and Tom Brenna, Professor of Paediatrics and Chemistry at University of Texas.

Wading and bipedalism

AAH proponent Algis Kuliukas, performed experiments to measure the comparative energy used when lacking orthograde posture with using fully upright posture. Although it is harder to walk upright with bent knees on land, this difference gradually diminishes as the depth of water increases and is still practical in thigh-high water.

In the BBC 4 documentary "H2O:the Molecule that Made Us, Series 1 Episode 2, Civilisations".(2021) Harvard anthropology professor Richard Wrangham, commenting on features of bonobo life filmed around rivers and streams in the Congo, suggests a similar habitat led to the evolution of our hominin ancestors as “a water walking wading ape ... It’s how we became bipedal”. That such a habitat "promoted adaptations for habitual bipedality in early hominins" and "that access to aquatic habitats was a necessary condition for adaptation to savanna habitats" were conclusions Wrangham and his colleagues had previously reached following their research into food provisioning in early hominins.

In a critique of the AAH, Henry Gee questioned any link between bipedalism and diet. Gee writes that early humans have been bipedal for 5 million years, but our ancestors' "fondness for seafood" emerged a mere 200,000 years ago.

Diet

Neanderthal skull (right) compared with modern human

Evidence supports aquatic food consumption in Homo as early as the Pliocene, but its linkage to brain evolution remains controversial. Further, there is no evidence that humans ate fish in significant amounts earlier than tens to hundreds of thousands of years ago. Supporters argue that the avoidance of taphonomic bias is the problem, as most hominin fossils occur in lake-side environments, and the presence of fish remains is therefore not proof of fish consumption. They also claim that the archaeological record of human fishing and coastal settlement is fundamentally deficient due to postglacial sea level rise.

In their 1989 book The Driving Force: Food, Evolution and The Future, Michael Crawford and David Marsh claimed that omega-3 fatty acids were vital for the development of the brain:

A branch of the line of primitive ancestral apes was forced by competition to leave the trees and feed on the seashore. Searching for oysters, mussels, crabs, crayfish and so on they would have spent much of their time in the water and an upright position would have come naturally.

Crawford and Marsh opined that the brain size in aquatic mammals is similar to humans, and that other primates and carnivores lost relative brain capacity. Cunnane, Stewart, Crawford, and colleagues published works arguing a correlation between aquatic diet and human brain evolution in their "shore-based diet scenario", acknowledging the Hardy/Morgan's thesis as a foundation work of their model. As evidence, they describe health problems in landlocked communities, such as cretinism in the Alps and goitre in parts of Africa due to salt-derived iodine deficiency, and state that inland habitats cannot naturally meet human iodide requirements.

Biologists Caroline Pond and Dick Colby were highly critical, saying that the work provided "no significant new information that would be of interest to biologists" and that its style was "speculative, theoretical and in many places so imprecise as to be misleading." British palaeontologist Henry Gee, who remarked on how a seafood diet can aid in the development of the human brain, nevertheless criticized AAH because inferring aquatic behavior from body fat and hairlessness patterns is an unjustifiable leap.

Diving behavior and performance

Aside from working as a professor, Erika Schagatay is also an experienced scuba and freediver whose research centers around human diving abilities. She suggests that such abilities are consistent with selective pressure for underwater foraging during human evolution, and discussed other anatomical traits speculated as diving adaptations by Hardy/Morgan. John Langdon suggested that such traits could be enabled by a human developmental plasticity.

Vernix caseosa

Tom Brenna, professor of pediatrics whose primary research focuses on fats, oils, and fatty acids, listened to the 2005 radio documentary Scars of Evolution where David Attenborough reported an observation that harbor seals were born with something that resembled human vernix caseosa. Intrigued, Brenna led a team that collaborated with Judy St Leger at San Diego Seaworld to compare the chemistry of human vernix and samples from California sea lion pups. They established that the molecular composition of both is similar, being rich in branched chain fatty acids and squalene.